K&N 57i Series Induction Kits are specifically designed for each different vehicle and will free your car from the size restriction that comes with the factory air box. These economical kits can take a variety of different forms based on vehicle characteristics and available space under the hood. Each kit is designed to provide power throughout the RPM range. The extra surface area of these open-air air filters provide even more airflow at lower restriction than a K&N O/E replacement filter which is always limited to the size of the factory air box. The larger air filter also captures and holds more dirt increasing its service life before a cleaning is required (up to 100,000 miles). The filter is either directly attached to the engine carburetor or throttle body or indirectly through a tube assembly running from the filter to the engine. All adapters are made from high quality materials such as steel, aluminum, silicon or reinforced nylon to ensure long life. 57i Intakes are not legal for use in California and other US States adopting California emission standards.

Accessories

Customer Feedback

Not the first time that I use your products ( Volvo 460 & Citroen BX with carburators / K&N - 56-1651,Renault Clio 1.2 / K&N RX extreme series ), and now this one in Fiat 500L with 1.4 engine. All are great, I hope you'll make oil and fuel filters to for my Fiat. Sorry on my english, whish you all the best.
Mladen Tesic ( Teshech ), Serbia, Zrenjanin

I replaced the stock filter with K&N 33-2539 a month ago for my Citroen Xantia 3.0i V6 194 hp, myself. Since then I have found the diffrence in a way that never happened before. It roars and hops. Also, acceleration at higher speed (140-180 kph) is fantastic, really. Worth investing for driving pleasure. No other information has been collected yet.
Dave, Bangkok, Thailand

Congratulations on a fantastic product. I own a Citroen Xantia HDI 2ltr diesel, now semi retired, after 51 yrs on the spanners, also I tow a caravan 15ft. I am really pleased with my K&N filter, I fact I have just purchased a Daihatsu Sirion 1ltr petrol car ,so am going to put a filter in this one as well, as petrol in the Uk is £1/04 a ltr, so one has to get the most out of your petrol as possible.
Jim Edwards, United Kingdom